Inert plastic coated flexible type diaphragm for application in

Details Inert plastic coated flexible type diaphragm for application in Inert plastic coated flexible type diaphragm for application in

1996-07-09

1997-06-03

Denion, Thomas E.

Expansible chamber devices

Collapsible chamber wall portion

Wall portion formed of flexible material

92 98R, 92 99, 92103F, F01B 1900

Patent

active

056343914

ABSTRACT:
Inert plastic coated flexible diaphragm for sanitary pump applications includes a first body portion, disposed in center of diaphragm, which is relatively thick and exhibits a first degree of flexibility. A second body portion is formed contiguously with the first body portion and extends around periphery thereof. The second body portion is relatively thin, compared to the first body portion, and exhibits a second degree of flexibility greater than the first degree of flexibility. A sealing bead-like member is formed contiguously with such second body portion and extends around periphery thereof for sealing the flexible diaphragm in an operating position within a housing portion of such pump. A flexible plastic layer is adhered to each surface of the first body portion, the second body portion and such sealing bead-like member which will come into intimate contact with a material to be pumped. Such plastic layer having a substantially uniform thickness. An insert member is embedded within the first body portion to enable the inert plastic coated flexible type diaphragm to be connected to a rod-like piston member disposed for reciprocal movement within such pump.

REFERENCES:
patent: 2840339 (1958-06-01), Price
patent: 2947325 (1960-08-01), McFarland, Jr.
patent: 3208721 (1965-09-01), McHugh
patent: 3282171 (1966-11-01), Tuckmantel
patent: 3613518 (1971-10-01), Prosser
patent: 3950996 (1976-04-01), Lewis
patent: 5052276 (1991-10-01), Halsey

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